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The recent contrastive language-image pre-training (CLIP) model has shown great success in a wide range of image-level tasks, revealing remarkable ability for learning powerful visual representations with rich semantics. An open and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-18 Peng Wu , Xuerong Zhou , Guansong Pang , Lingru Zhou , Qingsen Yan , Peng Wang , Yanning Zhang

Contrastive Vision-Language Pre-training, known as CLIP, has provided a new paradigm for learning visual representations by using large-scale contrastive image-text pairs. It shows impressive performance on zero-shot knowledge transfer to…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Renrui Zhang , Rongyao Fang , Wei Zhang , Peng Gao , Kunchang Li , Jifeng Dai , Yu Qiao , Hongsheng Li

Few-shot Test-Time Domain Adaptation focuses on adapting a model at test time to a specific domain using only a few unlabeled examples, addressing domain shift. Prior methods leverage CLIP's strong out-of-distribution (OOD) abilities by…

Machine Learning · Computer Science 2025-06-24 Zhixiang Chi , Li Gu , Huan Liu , Ziqiang Wang , Yanan Wu , Yang Wang , Konstantinos N Plataniotis

This paper considers a practical few-shot anomaly detection (FSAD) setting, termed discriminative FSAD, where a limited number of both normal and anomalous examples are available as references during inference. Existing FSAD methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Huan Wang , Jun Shen , Jun Yan , Guansong Pang

We introduce ProLIP, a simple and architecture-agnostic method for adapting contrastively pretrained vision-language models, such as CLIP, to few-shot classification. ProLIP fine-tunes the vision encoder's projection matrix with Frobenius…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Mohammad Fahes , Tuan-Hung Vu , Andrei Bursuc , Patrick Pérez , Raoul de Charette

Few-shot anomaly detection (FSAD) aims to detect unseen anomaly regions with the guidance of very few normal support images from the same class. Existing FSAD methods usually find anomalies by directly designing complex text prompts to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Fenfang Tao , Guo-Sen Xie , Fang Zhao , Xiangbo Shu

Contrastive Language-Image Pretraining (CLIP) has shown impressive zero-shot performance on image classification. However, state-of-the-art methods often rely on fine-tuning techniques like prompt learning and adapter-based tuning to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Ans Munir , Faisal Z. Qureshi , Muhammad Haris Khan , Mohsen Ali

With its powerful visual-language alignment capability, CLIP performs well in zero-shot and few-shot learning tasks. However, we found in experiments that CLIP's logits suffer from serious inter-class confusion problems in downstream tasks,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Shuo Li , Fang Liu , Zehua Hao , Xinyi Wang , Lingling Li , Xu Liu , Puhua Chen , Wenping Ma

Given a query from one modality, few-shot cross-modal retrieval (CMR) retrieves semantically similar instances in another modality with the target domain including classes that are disjoint from the source domain. Compared with classical…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Jingyou Xie , Jiayi Kuang , Zhenzhou Lin , Jiarui Ouyang , Zishuo Zhao , Ying Shen

Precise anomaly detection in medical images is critical for clinical decision-making. While recent unsupervised or semi-supervised anomaly detection methods trained on large-scale normal data show promising results, they lack fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Yue Zhou , Yuan Bi , Wenjuan Tong , Wei Wang , Nassir Navab , Zhongliang Jiang

Multi-label classification is an essential task utilized in a wide variety of real-world applications. Multi-label zero-shot learning is a method for classifying images into multiple unseen categories for which no training data is…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Muhammad Ali , Salman Khan

Zero-shot anomaly detection (ZSAD) offers potential for identifying anomalies in medical imaging without task-specific training. In this paper, we evaluate CLIP-based models, originally developed for industrial tasks, on brain tumor…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Aldo Marzullo , Marta Bianca Maria Ranzini

CCTV safety monitoring demands anomaly detectors combine reliable clip-level accuracy with predictable per-clip latency despite weak supervision. This work investigates compact vision-language models (VLMs) as practical detectors for this…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Kirill Borodin , Kirill Kondrashov , Nikita Vasiliev , Ksenia Gladkova , Inna Larina , Mikhail Gorodnichev , Grach Mkrtchian

Applying large-scale vision-language pre-trained models like CLIP to few-shot action recognition (FSAR) can significantly enhance both performance and efficiency. While several studies have recognized this advantage, most of them resort to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Jiazheng Xing , Chao Xu , Mengmeng Wang , Guang Dai , Baigui Sun , Yong Liu , Jingdong Wang , Jian Zhao

Multi-label classification is crucial for comprehensive image understanding, yet acquiring accurate annotations is challenging and costly. To address this, a recent study suggests exploiting unsupervised multi-label classification…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Dongseob Kim , Hyunjung Shim

Few-shot image classification remains difficult under limited supervision and visual domain shift. Recent cache-based adaptation approaches (e.g., Tip-Adapter) address this challenge to some extent by learning lightweight residual adapters…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Tasweer Ahmad , Arindam Sikdar , Sandip Pradhan , Ardhendu Behera

Vision-language models (VLMs) like CLIP are trained with the objective of aligning text and image pairs. To improve CLIP-based few-shot image classification, recent works have observed that, along with text embeddings, image embeddings from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Dipam Goswami , Simone Magistri , Gido M. van de Ven , Bartłomiej Twardowski , Andrew D. Bagdanov , Tinne Tuytelaars , Joost van de Weijer

Few-shot OOD detection focuses on recognizing out-of-distribution (OOD) images that belong to classes unseen during training, with the use of only a small number of labeled in-distribution (ID) images. Up to now, a mainstream strategy is…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Hao Sun , Rundong He , Zhongyi Han , Zhicong Lin , Yongshun Gong , Yilong Yin

The purpose of few-shot recognition is to recognize novel categories with a limited number of labeled examples in each class. To encourage learning from a supplementary view, recent approaches have introduced auxiliary semantic modalities…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Siteng Huang , Min Zhang , Yachen Kang , Donglin Wang

Few-shot segmentation (FSS) aims to segment the novel classes with a few annotated images. Due to CLIP's advantages of aligning visual and textual information, the integration of CLIP can enhance the generalization ability of FSS model.…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Chen Shuai , Meng Fanman , Zhang Runtong , Qiu Heqian , Li Hongliang , Wu Qingbo , Xu Linfeng
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